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Secondarily, if this test would be helpful in prevention of recurrent or sporadic stillbirths. In recurrent stillbirths, medical interference may prove helpful by preventing them in future. Analyzing the etiology of sporadic stillbirths might lead to reassurance and avoid irrelevant diagnostic tests in future pregnancies. The single most useful diagnostic test is a fetal autopsy (Peterson et al., 1999). Not only does the visible genetic and structural abnormalities but also an autopsy would be of great help in relating specific etiologies to stillbirth.

The frequency of fetal autopsy is very less due to the fact that it is costly, not many trained pathologists are available and also it may be of great discomfort to the family and clinicians to deal with such a case. If autopsy is refused, partial autopsy or postmortem magnetic resonance imaging (MRI) scans may provide the necessary data. Embryonic membranes, placenta and umbilical cord must be physically and histologically examined while evaluating stillbirth etiology.

This would give a precise cause of fetal death and might also provide clues for death due to secondary causes like infections, thrombophilia, and anemia. In most cases, families do not object on placental evaluation. In the cases where autopsy is not performed karyotyping the fetus would prove helpful. Cells and tissues from placenta (especially chorionic plate), fascia lata, skin from the nape of the neck, and tendons can be isolated and cultured and used for diagnostic tests like karyotyping.

Comparative genomic hybridization shows tremendous promise for the identification of chromosomal abnormalities in stillbirths wherein fetal cells cannot be successfully cultured (Silver et al., 2006). An autopsy followed by a careful histological examination might help in relating stillbirths that result due to infections from the bacteria or virus. Parvovirus serology may be useful because this virus has been implicated in a meaningful proportion of cases (Erik et al., 2002).

Diagnostic tests are performed for the detection of syphilis also since it contributes to the list of accepted causes of stillbirth. For various viral and protozoal agents like toxoplasmosis, rubella, cytomegalovirus (CMV) and herpes simplex virus (HSV) {TORCH}, serological screening is carried out. For bacterial and viral infections in the fetus, nucleic acid based tests are more helpful when compared to tissue cultures. Feto-maternal hemorrhage can be detected using Kleihauer – Betke test (KBT). Most laboratories use manual KBT which is prone to error. It has been found that flow cytometry is a better tool in detecting fetal erythrocytes in maternal blood. In order to eliminate red cell alloimmunization as an etiology of stillbirth, an indirect Coomb’s test is performed.

Autopsy and examination of placenta are helpful in this situation. During the initial prenatal visits, if the antibody screen comes out to be negative then there is a need for recurrent testing. Diagnostic tests for conditions like diabetes and heritable thrombophilias mus本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。